I like the top of this draft. I'm intrigued by your trade down scenarios for the Browns, however, they already have (2) 1st, 3rd and 4th round picks in addtion to their pick in rounds 2,5,6&7. At some point they have to get players and I don't think reaching for Mettzenberg is the answer. I can see them trading down a little and taking one of the top 4 tackles to play RT for them. This will solify the line, give the team an identity and make it easier for the future QB/Hoyer to suceed. Then they can get a QB later, a WR, RB and some defensive parts.
In this scenario I think the Browns should stay at #9 and take Justin Gilbert..maybe even Ha Ha Clinton Dix. They have plenty of picks to address there offensive needs later on.